Valve.



L. B. GRAY;

VALVE.

APPLICATION nun um. 29, 1910.

Patented Oct. 21, 1913.

UNITED STATES PATENT oFnIoE.

nawnnncn n. GRAY, or 'nos'ron. MASSACHUSETTS, ASSIG-NOR TQ HYDRAULICvacuum: DREDGING'COMPANY, 0F WILMINGTON, DELAWARE, A CORPORATION OFDELAWARE.

VALVE.

Specification of Letters Patent.

Patented 0ct.21, 1913.

Application filed August 29, 1910. Serial No.-579,412.

To all whom it may concern This invention relates to plural-way, valves,and has for its object to provide a;

mode of operating the valve by which the valve member may be turnedquickly from one extreme position to another in consequence of arelatively slight movement of the operating member, while the entirevalve structure is made compact.

The manner in which I have carried the invention into practical form,and the preferred oneof the types in which the essence of the inventionmay be embodied, are hereinafter described in detail and illustrated inthe accompanying drawings.

In the drawings filed, which form a part of this application, Figure 1represents a top plan view of a valve constructed according to myinvention. Fig. 2 represents a vertical central section of the same.Fig. 3 represents a horizontal section of the tubular portion of thevalve parallel with the front thereof.

The same letters of reference indicate the same parts in all thefigures.

A new combination of the several parts forming the valve is embraced inthe present invention.

The valve consists of a combination of simple parts of which arepresents a tubular casing having two nearly parallel tubular branches6 and c as inlets and d a tubular outlet, provided at their respectiveends with an interior screw threaded ortion, as shown in Figs. 2 and 3.In t e tubular casing a and intersecting the passages in the tubularbranches 1; and 0, and outlet 03, at their juncture is provideda taperedvertically disposed plug e, as shown in Fig. 2, contained in a conicalopening formed through the casing 11 and adapted to be turned therein.The tapering plug 6 is provided with a channel f, of the same size asthe passages in the branches and in the outlet, as shown in Fig. 3.

Now in order to turn the close fittin ta pering plug 6 with ease andquickly, secure to the large end of the plug a small gear pinion z, andmount upon a stud h, se-

cured toa part ofthe valve casing, a spider or frame k, comprisinradiating arms, to the outer ends of which is secured "a segmentalannular, or internal, cog-gear g, which meshes with the small pinion Anoperating handle 'y' is provided for tilrning the said gears and therebyturning the ta-' .pering valve-plug e in-a very easyand quick manner.

The operating devices embraced in the combination of the several partsforming this valve may be seen from Fig. 1, in which the full lineposition shows the parts when the solid part of the plug e extendsacross the tubular part d, and closes the valve, and

the left-hand dotted-line position shows the parts in therelationillustrated in Fig. 3, and the right-hand dotted-line positionthe operating parts as they would be when the valve is so set as toconnect branch 0 and outlet d.

It will be seen in Fig. 2 that the tapering plug 6 is provided at itslower end with a projecting screw threaded part and having a nutthereon, by means of which the tapering plug 6 may be held in closecontact with the surrounding casing and tightened when thesame becomesso much worn as not to fit tightly, whereby to prevent leakage of wateror steam passing through the valve. In order to turn the tapering plug eenough to close one branch and open the other in this valve, I haveprovided mechanism through which a slight turn of-the operating handlewill turn the valve plug through a much larger angle. It will be seenand understood from the clear description of this valve mechanism, asstated in the foregoing, that a new combination of parts is the result.

I claim,-

1. The combination in a valve comprising a casing a, having two tubularinlet branches 6 and 0, nearly parallel, and a tubular outlet (I, atapering plug valve 6, extending across the passages, of said inletbranches and the outlet at their intersection, and having a screw threadat its small end, means engaged with said small end bearing on the valvecasing, a gear pinion 71, secured upon and in contacting relation withthe large end of said tapering valve, a pivot 72. on the casing, aspider is on said pivot, comprising arms to the ends of which aresecured an annular gear segment g, meshing j, secured to the spidersubstantially as described.

2. The combination comprising a valve casing having intersectingbranches, a plug valve contained in the casing at the intersection ofthe branches, a pinion secured to said plug valve, an internal gearmeshing with said pinion and pivotally mounted on the casing at a pointrelatively close to the pinion, and an operating handle secured to theinternal gear, the latter having a radius more than twice as great asthat of the pinion, whereby the plug may be turned through a greaterangle than the handle, substantially as described.

3. A plural-way cock comprising a valve casing having a number ofbranches, in comv bination with a valve member made in the form of atapered or conical plug inserted endwise through one side of the casing,a pinion mounted upon the large end of said valve member, a gear segmentmeshing with said pinion, and a pivoted holder for said gear segmenthaving a portion which extends across the pinion, and thereby assists inretaining the valve member in the casing. In testimony whereof I haveaflixed my signature, in presence of two witnesses.

LAWRENCE B. GRAY. Witnesses A. H. BRowN, P. W. PEZZETTI.

